Answer:
2 / z - 9
Step-by-step explanation:
Don't worry division always goes before subtraction so you don't need any parenthesis.
Tell me if I'm wrong :)
Answer:

Step-by-step explanation:

break it into pieces



put it all together
*since there's no negative in front of the other numbers except 7 they're positive so you add them*

simplify

Answer:
It is 20/36 = 0.55... recurring.
Step-by-step explanation: